Tessian announced raising $65M in a round led by March Capital.

Tessian, a London, UK-based cybersecurity software developers, announced closing series C round at $65 million.

The deal, which values the company at $435 million pre-money, was made with investors led by March Capital, and joined by existing Tessian investors Accel, Balderton Capital, Latitude and Sequoia Capital, along with new investor Schroder Adveq.

Tessian, founded in 2013 as CheckRecipient by Edward Bishop, Thomas Adams and Tim Sadler (CEO), is pioneering a new approach to cybersecurity and defining a new category of security software called Human Layer Security. Today, 90% of today’s data breaches are caused by some form of human error because, for decades, cybersecurity software has focused on the machine layer of an organization and not the most vulnerable asset: the people.

While organizations have traditionally relied on training programs or restricting people’s access to data and systems to overcome the so-called “people problem” in security, Tessian uses machine learning to stop data breaches and security threats caused by human error - without disrupting employee workflow. It builds Behavioral Intelligence Models, tailored to every employee, by analyzing individuals’ communication patterns and behaviors online. Tessian uses the models to automatically detect security threats and prevents them from turning into breaches by notifying the employee of the risk in-the-moment. Over time, these alerts help employees improve their security behaviors.

Tessian previously raised almost $60 million.